What Are the Different Time Zones in the USA, and Why Do Businesses Care? 

Scoot over, Zoom fatigue. There’s a new sheriff in town: time zone fatigue. If you have one employee working in California, another in Wisconsin, and another in Maine, you’re probably already familiar with the condition. To get through the confusion, you need a cheat sheet to understand the different time zones in the USA. And, voila! It has arrived.

Read on to learn why time zones matter in business, what the different time zones spanning the states are, and how to handle time zone differences.

Why do time zones matter in business? 

In this day and age, everyone is interconnected. And with many businesses nationwide (and globally) working and operating remotely, juggling multiple time zones is common. 

You may work with the following parties across different time zones:

• Employees
• Vendors
• Business partners 
• Customers

Whether you’re calling to place an order from a vendor or scheduling a meeting with a remote team, time zones matter. 

What are the time zones in the USA?

There are several different time zones in the United States. Take a look at the six zones all 50 states and D.C. could fall under, along with an example of the time difference for each:

1. Eastern Standard Time (EST) | 2 p.m.
2. Central Standard Time (CST) | 1 p.m.
3. Mountain Standard Time (MST) | 12 p.m.
4. Pacific Standard Time (PST) | 11 a.m.
5. Alaska Standard Time (AKST) | 10 a.m.
6. Hawaii-Aleutian Standard Time (HST) | 8 a.m.

Most states also follow daylight saving time (DST), which can throw a wrench in your ability to keep up with different time zones. 

What to know about daylight saving time 

Daylight saving time is the practice of changing the clocks by one hour in the spring and the fall—springing forward and falling back. In the spring, the clocks go forward (1 p.m. becomes 2 p.m.). In the fall, the clocks go backward (2 p.m. becomes 1 p.m.). 

Daylight saving time begins on the second Sunday in March and ends on the first Sunday in November. In total, DST lasts 34 weeks. The purpose is to increase daylight hours so that darkness falls later during the summer months.

But, not all states follow daylight saving time. Officially, Arizona (excluding Navajo Nation) and Hawaii do not observe DST. Several other states that do follow DST have introduced legislation to end the practice of changing clocks. 

Not to mention, the U.S. Senate unanimously passed a bill to make daylight savings time permanent in March 2022. If it passes in the House and is signed into law by the president, daylight saving time would be permanent. The bill would also allow Arizona and Hawaii to remain on standard time. 

Let’s take a look at an example of how DST currently impacts time zone differences. During daylight savings time in Ohio, Ohio is three hours ahead of Arizona. But when Ohio falls back an hour in November, there’s only a two-hour time difference between Ohio and Arizona since Arizona doesn’t follow DST. So although Arizona is on MST and Ohio is on EST (spoiler!), Arizona is three hours behind during DST. 

Which states are in which time zones? 2 Charts to use

Want to see which states are in which time zones? We’ve included two charts, depending on what you need. Use Chart 1 to see states categorized by time zone. Use Chart 2 to see states categorized alphabetically. 

Heads up! If you do work internationally, make sure to understand global time zones, too. 

Chart 1: Time zone 

Check out our time zone chart. Remember that some states have two time zones, depending on the county or town (indicated with an *).

Eastern Standard Time	Central Standard Time	Mountain Standard Time	Pacific Standard Time	Alaska Standard Time	Hawaii-Aleutian Standard Time
Connecticut	Alabama	Arizona	California	Alaska	Hawaii
Delaware	Arkansas	Colorado	Idaho*
D.C.	Florida*	Idaho*	Nevada*
Florida*	Illinois	Kansas*	Oregon*
Georgia	Indiana*	Montana	Washington
Indiana*	Iowa	Nebraska*
Kentucky*	Kansas*	Nevada*
Maine	Kentucky*	New Mexico
Maryland	Louisiana	North Dakota*
Massachusetts	Michigan*	Oregon*
Michigan*	Minnesota	South Dakota*
New Hampshire	Mississippi	Texas*
New Jersey	Missouri	Utah
New York	Nebraska*	Wyoming
North Carolina	North Dakota*
Ohio	Oklahoma
Pennsylvania	South Dakota*
South Carolina	Tennessee*
Tennessee*	Texas*
Vermont	Wisconsin
Virginia
West Virginia

Chart 2: Alphabetical 

Want to find your state and see its time zone? Use our state chart below, organized alphabetically. Again, some states use multiple time zones, depending on the area.

State	Time Zone(s)
Alabama	Central Standard Time
Alaska	Alaska Standard Time
Arizona	Mountain Standard Time
Arkansas	Central Standard Time
California	Pacific Standard Time
Colorado	Mountain Standard Time
Connecticut	Eastern Standard Time
Delaware	Eastern Standard Time
D.C.	Eastern Standard Time
Florida	Eastern Standard Time, Central Standard Time
Georgia	Eastern Standard Time
Hawaii	Hawaii-Aleutian Standard Time
Idaho	Mountain Standard Time, Pacific Standard Time
Illinois	Central Standard Time
Indiana	Eastern Standard Time, Central Standard Time
Iowa	Central Standard Time
Kansas	Central Standard Time, Mountain Standard Time
Kentucky	Central Standard Time, Eastern Standard Time
Louisiana	Central Standard Time
Maine	Eastern Standard Time
Maryland	Eastern Standard Time
Massachusetts	Eastern Standard Time
Michigan	Eastern Standard Time, Central Standard Time
Minnesota	Central Standard Time
Mississippi	Central Standard Time
Missouri	Central Standard Time
Montana	Mountain Standard Time
Nebraska	Central Standard Time, Mountain Standard Time
Nevada	Pacific Standard Time, Mountain Standard Time
New Hampshire	Eastern Standard Time
New Jersey	Eastern Standard Time
New Mexico	Mountain Standard Time
New York	Eastern Standard Time
North Carolina	Eastern Standard Time
North Dakota	Central Standard Time, Mountain Standard Time
Ohio	Eastern Standard Time
Oklahoma	Central Standard Time
Oregon	Pacific Standard Time, Mountain Standard Time
Pennsylvania	Eastern Standard Time
Rhode Island	Eastern Standard Time
South Carolina	Eastern Standard Time
South Dakota	Central Standard Time, Mountain Standard Time
Tennessee	Central Standard Time, Eastern Standard Time
Texas	Central Standard Time, Mountain Standard Time
Utah	Mountain Standard Time
Vermont	Eastern Standard Time
Virginia	Eastern Standard Time
Washington	Pacific Standard Time
West Virginia	Eastern Standard Time
Wisconsin	Central Standard Time
Wyoming	Mountain Standard Time

Tips for handling different time zones

There may be times when working with a vendor or customer in a different time zone impacts your day … like if you go to place an order and they’re already closed. Or if you tell a customer you’ll call them at 5 p.m. and you’re two hours behind them. 

But, the most common situation you may face with time zone confusion is among your team. According to Gallup, 45% of full-time U.S. employees work from home. And if you let employees work anywhere in the country, their time zones may get a little tricky to juggle.

Take a look at the following tips to help you handle different time zones with ease.

1. Use time and attendance software

Need an easier way to track employee hours across different time zones? Use time and attendance software with a time zone setting.

Employees can enter their in and out times according to their time zone, eliminating confusion and miscommunication for both employers and employees.

2. Be clear about the time zone you’re talking about

“Let’s meet at 1 p.m.”  Is that 1 p.m. my time … or yours? If you have employees (or vendors, etc.) working across different time zones, simply saying a time may cause confusion. 

To clear the air, communicate which time zone you’re referencing. If possible, you can detail the different times for each party. For example, you may say something like “1 p.m. EST, which would be 12 p.m. CST and 10 a.m. PST.”

3. Use consistency when scheduling meetings

Consider setting up meetings for the same time to provide consistency among employees, customers, vendors, etc. 

If employees work varying schedules, schedule meetings during times when all employees are active.

4. Take advantage of tools 

Consider taking advantage of the following to help you stay organized and on top of deadlines when working with people in different time zones:

• Project management tools (e.g., Jira)
• Collaboration tools (e.g., Google Workspace)
• Communication tools (e.g., Slack)

Some tools, like Slack, alert you of someone else’s time zone if you send a message early in the morning or late in the evening for them. 

Keeping ahead of time zone differences

Effectively manage the difference between time zones to avoid miscommunication blunders with employees, vendors, and customers. 

Whether you’re scheduling meetings, placing orders, or planning projects, keep the following time zone tips in mind: 

1. Understand the different time zones in the U.S. (or beyond if you work internationally)
2. Make sure all parties know what time zone you’re talking about
3. Take advantage of tools to help you work with people in different time zones

This article has been updated from its original publication date of September 23, 2022.

This is not intended as legal advice; for more information, please click here.